<?php
/**
 * Magento
 *
 * NOTICE OF LICENSE
 *
 * This source file is subject to the Open Software License (OSL 3.0)
 * that is bundled with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://opensource.org/licenses/osl-3.0.php
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@magentocommerce.com so we can send you a copy immediately.
 *
 * DISCLAIMER
 *
 * Do not edit or add to this file if you wish to upgrade Magento to newer
 * versions in the future. If you wish to customize Magento for your
 * needs please refer to http://www.magentocommerce.com for more information.
 *
 * @copyright   Copyright (c) 2014 X.commerce, Inc. (http://www.magentocommerce.com)
 * @license     http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
 */
namespace Magento\Customer\Model\Config\Source\Group;

class Multiselect implements \Magento\Framework\Option\ArrayInterface
{
    /**
     * Customer groups options array
     *
     * @var null|array
     */
    protected $_options;

    /**
     * @var \Magento\Customer\Service\V1\CustomerGroupServiceInterface
     */
    protected $_groupService;

    /**
     * @var \Magento\Framework\Convert\Object
     */
    protected $_converter;

    /**
     * @param \Magento\Customer\Service\V1\CustomerGroupServiceInterface $groupService
     * @param \Magento\Framework\Convert\Object $converter
     */
    public function __construct(
        \Magento\Customer\Service\V1\CustomerGroupServiceInterface $groupService,
        \Magento\Framework\Convert\Object $converter
    ) {
        $this->_groupService = $groupService;
        $this->_converter = $converter;
    }

    /**
     * Retrieve customer groups as array
     *
     * @return array
     */
    public function toOptionArray()
    {
        if (!$this->_options) {
            $groups = $this->_groupService->getGroups(false);
            $this->_options = $this->_converter->toOptionArray($groups, 'id', 'code');
        }
        return $this->_options;
    }
}
